linux/fs/smb/client/dfs_cache.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * DFS referral cache routines
 *
 * Copyright (c) 2018-2019 Paulo Alcantara <[email protected]>
 */

#ifndef _CIFS_DFS_CACHE_H
#define _CIFS_DFS_CACHE_H

#include <linux/nls.h>
#include <linux/list.h>
#include <linux/uuid.h>
#include "cifsglob.h"

extern struct workqueue_struct *dfscache_wq;
extern atomic_t dfs_cache_ttl;

#define DFS_CACHE_TGT_LIST_INIT(var) …

#define DFS_CACHE_TGT_LIST(var) …

struct dfs_cache_tgt_list { … };

struct dfs_cache_tgt_iterator { … };

int dfs_cache_init(void);
void dfs_cache_destroy(void);
extern const struct proc_ops dfscache_proc_ops;

int dfs_cache_find(const unsigned int xid, struct cifs_ses *ses, const struct nls_table *cp,
		   int remap, const char *path, struct dfs_info3_param *ref,
		   struct dfs_cache_tgt_list *tgt_list);
int dfs_cache_noreq_find(const char *path, struct dfs_info3_param *ref,
			 struct dfs_cache_tgt_list *tgt_list);
void dfs_cache_noreq_update_tgthint(const char *path, const struct dfs_cache_tgt_iterator *it);
int dfs_cache_get_tgt_referral(const char *path, const struct dfs_cache_tgt_iterator *it,
			       struct dfs_info3_param *ref);
int dfs_cache_get_tgt_share(char *path, const struct dfs_cache_tgt_iterator *it, char **share,
			    char **prefix);
char *dfs_cache_canonical_path(const char *path, const struct nls_table *cp, int remap);
int dfs_cache_remount_fs(struct cifs_sb_info *cifs_sb);
void dfs_cache_refresh(struct work_struct *work);

static inline struct dfs_cache_tgt_iterator *
dfs_cache_get_next_tgt(struct dfs_cache_tgt_list *tl,
		       struct dfs_cache_tgt_iterator *it)
{ … }

static inline struct dfs_cache_tgt_iterator *
dfs_cache_get_tgt_iterator(struct dfs_cache_tgt_list *tl)
{ … }

static inline void dfs_cache_free_tgts(struct dfs_cache_tgt_list *tl)
{ … }

static inline const char *
dfs_cache_get_tgt_name(const struct dfs_cache_tgt_iterator *it)
{ … }

static inline int
dfs_cache_get_nr_tgts(const struct dfs_cache_tgt_list *tl)
{ … }

static inline int dfs_cache_get_ttl(void)
{ … }

#endif /* _CIFS_DFS_CACHE_H */